[Q] Colour Banding....it hurts

So let's get to it.
I have a n7000 and it has bad colour banding everywhere.
If there is a gradient, there is colour banding.
I tried quite a few roms (cm/omni/du/slimsaber/spiritrom/some other one).
No improvement
I have also tried changing kernels (forest and raw).
No improvement.
Searching the forums and google didn't help either.
What I did manage is to set the mdnie to "movie" which then removed the colourbanding.
However everything gets this washed up colour tone which is even worse.

So my question: Is there a fix for the colour banding?

I remember that at some point in time, some cm roms on some phones (vague?) had an option in the performance menu to fix colour banding.
Does anyone know if there is an alternative (maybe an app) that does something similar.